After reading your product information about the mineral content of Koi Clay and that plants can benefit from it as well as fish, I decided to mix about a half cupful of the clay in with the soil in each container when we re-potted our water lilies early last summer. I don't know if we can give credit to the clay, but we sure had multiple blooms all summer on all eight of our different water lilies last year. We know several people with ponds and visited many of them last year. I didn't see one with as many blooms as we had all summer. I'm not going to risk not using it for our water plants next year! Dale Torok - 2003